A Novel Class of Highly Potent and Selective A<sub>1</sub> Adenosine Antagonists: Structure−Affinity Profile of a Series of 1,8-Naphthyridine Derivatives
作者:Pier Luigi Ferrarini、Claudio Mori、Clementina Manera、Adriano Martinelli、Filippo Mori、Giuseppe Saccomanni、Pier Luigi Barili、Laura Betti、Gino Giannaccini、Letizia Trincavelli、Antonio Lucacchini
DOI:10.1021/jm990321p
日期:2000.7.1
A series of 1,8-naphthyridine derivatives (12-36), bearing a phenyl group in position 2 and various substituents in positions 4 and 7, were synthesized in an attempt to obtain potent, selective antagonists for the A1 adenosine receptor subtype. The compounds were tested to evaluate their affinity for A1 compared with A2A and A3 adenosine receptor subtypes. In binding studies in bovine brain cortical
合成了一系列在位置2带有苯基,在位置4和7带有多个取代基的1,8-萘啶衍生物(12-36),试图获得有效的,选择性的A1腺苷受体亚型拮抗剂。测试了这些化合物以评估它们与A2A和A3腺苷受体亚型相比对A1的亲和力。在牛脑皮质膜的结合研究中,大多数化合物显示出对低纳摩尔范围内的A1受体具有亲和力,而在亚纳摩尔范围内的两个对A1受体具有亲和力,并且具有相对于A2A和A3选择性的有趣程度。对4-取代的衍生物的比较表明,具有4-喹啉结构的4-OH取代引起A1和A2A亲和力的增加,并且通常还引起A1选择性的增加。7位上的取代类型可以极大地调节亲和力:在这个位置上最有趣的取代基似乎是吸电子基团。特别是7-氯萘啶25d表现出显着的选择性(A2A / A1比为670,A3 / A1比为14,000)与更高的A1亲和力(Ki = 0.15 nM)相关。对这些化合物12-36的NMR研究表明,被4-OH取代的化